Sand-pump for wells.



L. L. RICHARD.

SAND PUMP FOR WELLS.

APPLICATION FILED MAR-I5. I9l6.

1203,7845 Patented NOV. 7, 1916;

wmvzss K INVENTOR. 06010 BY iffy/yak ATTORNEY PATENT ]OFF ICE. 1f

LEBoY i; 310mm),- or-conriu'ieh, cn'mronnra, assrenon; or ONE-HALF 'ro smunnsummon, .13., or sen raanorsco, cnrrrormm.- A Y sann rumr' roe, warns.

To all whom t'may'c'o' cam: g Be it known that. LEROY L. RICHARD, a citizen. of the 'UnitedStates, residing at Coalinga, in the county of Fresno and State of California," have invented certain new 1 and useful Improvements in Sand-Pumps for Wells,of which the following is a speci- My'invention relates "to sand-pumps for wells, and more particularly to a device of: this. class in which a rotating bottom is employed for loosening the sand prior to. its admission into the barrel. 4 I

It frequently happens, in the drilling and pumping of wells, and particularly 'oil wells, that sand enters the well and clogs the bore for aconsiderabledistancelat its lower .por- 1 tion; Sometimes, moreover, a sudden of oil or V gas-forces abodylofsand several hundred] eet. up in the well andforms a tightly packed bridgeiwithln the casing.

In either-evengi the useof drilling tools to remove the-gobstructing sand is not 'desir-' able, for the reason, that such tools only pack the sandl'tig'hter, andby so doing are liable to '1 Split orjb'reak the casing. -;When

' the sand is lvery tightly packed, the ordinary sand .pump' also unsuccessful, since 8-6 it carries nomeans for efiectivelyfloosenin'g p The object biiiifveni9fi,- therefore is the sand-.2

to 'providea sand pump by-m'eans of which a'firmsand packror bridge may be readilyprojectingiinclined blades 16," -adaptedf -to Jbore .into' and loosen th'e'sand when t l 1e, .;9Q I i'auger'i's rotated;

loosened .and' removed withoutinjury-to casingof the .welLj A further object" or m invention a; to"

'P DV Qe a devie'ejofthe'describedtype' which- Ethe barrel for 4 0;

- my sand pump,when'read'withjreference the accompanying drawings',-in' which ,h'as-fa clear and, unobstructed .passa m s n en r ten i are thengiven1 a verticalireciprbcatory mo a '7. ag g' :thre'aLd'sfS' and -julgs., 12,'im .arts anosc r mt ge. Within I v V rather-1 amt-age The, Iap parent; from the following description of I Figure 1 .is[ an elevation',' lbroken,l; o

s nd-Pu p Fig fz isa -fverticali Stati n a the a 'F 31s i sseeetiongenlarged;

'croSS-s'ection,'enlarge(1,'on the 4-4 of 2. Fig; 5 ;is"a' 'crosss'ection, enlarged,

on' thelline 'ofIjFig, 2.. 1

. end with aba 'f Z towhich the sand In Ithe'drawin'gs,

with long pltch, and terminating at their lower ,ends at an'annular'shoulder 9, the "portion-- 1 of the extension'below' said shoulder, indi-- cated by the numeral 10,:havin'g a diameter preferably equal to the outside diameter-of the threads Surrounding this threaded portion of said sleeve. the sleeve 11 is formed or provided with;

he reference numerall Patented Nov. '7, 1916. Application am; March 15, 1916. Serial no. 4,294.

. attached. Connected to the lowerfendof l carried a bottom 5, having a valveifi and. a flared bore 7 said bottom being of a;;well,

known'type used in: connection with ordinary sand pumps. Theouter surface'of the cylindrical barrel extension-,4:- is formed. spiral threads 8, 'having'a relatively barrel extension; is a cylindrical'sleeve 1-1, '1

[upon the'inner surface of which, preferably near its uppenend, are spirally formed guide-lugs 12, adapted to engage the spiral threads 8 upon said barrel extension .4. Suit-.

fable drainage apertures 13are providedfin saidlsleeve 11, near its lower -end, and other];

drainage apertures .14, preferably disposed, spirally, as shown, to follow the-paths'of the, threads 8, are provided in the up'pery- The lower iendiof sand-loosener. In practice this besta-nf auger "1 5 which in the drawing is a 'separateff piece; screwed to the lower end ofjth'e sleeve, i said auger fbeing hollow, ass'howmandpreferably formed Swith" .two opposite inwardly;

into the well until the auger-15'- strikesthe,

wmiwh b I m a r e nt ren h caused to work Sa a-1mm "the: sand, and the loosened sand 'isiforced npiintofihfi'f;

interior bore of theextension rename 'bar-' rel 1, at each down-Wardstrokeithereoflthe valve 6 retaining said sand thereinr It is tobe noted thatj-the 'interijeilrbore(ii? a .the pump is clear and unobstructed except" by'the valve 6, a feature which minutes the-"entrance of sand into said bore'and'its I 'iremoval'gtherefrom. "'ljhe dumping the is accomplished nithe usual-manner 4O 1 for admitting sand thereinto; a sleeve sur- That is, after the interior of the barrel becomes full, the pump is drawn up out of the well and being swung over to a dump box is lowered upon an upstanding pin in said box, which said pin enters through the auger 15 and the bottom 5, and, striking the valvefi, opens the same, thus permitting the sand to run out.

The drainage apertures 13 and 14 are provided in the sleeve 11 to permit the escape of sand from the spacebetween said sleeve 11 and thebarrel extension 4, The positions of the apertures 14, are such that anymaterial in said space is forced out, on the upward stroke of the barrel extension 4, by the threads 8 and the shoulder 9, said. shoulder rising above the uppermost aperture on said upward stroke. At the lower limit of the stroke,'the shoulder 9 lies below the lower apertures 13, thus permitting free drainage when the parts are in this position.

My invention has been described and illustrated herein in its preferred form, but

I do not wish to be construed as limiting myself thereto, for the reason that changes may be made in the form and construction of the device without alfecting the essential principles of the invention.

1-. A sand pump comprising a barrel; a

- check valve in the lower end of said barrel for admitting sand thereinto; a movable sleeve surrounding said barrel;.mea -ns car.-

ried by said sleeve-for loosening the sand prior to its admission into the barrel; and

means positioned between said barrel and said sleeve for. rotating said sleeve when said barrel is moved lineally therewithin.

2. A sand pump comprising a barrel; a check valve in the lower end of said barrel -rounding said barrel; means carried by said sleeve for loosening the sand rior to its fab'out said barrel; '.3- 1 Pu ps fl'check'ivaltp in f thefllower "end thereofvfor;

vad i t a '1 ,eintof; a rotatable. sleeve;

admissioninto saidbarrel; an -means der pendent upon agrelat ve lineal movementof Qthe barrel and sleeve for rotating said sleeve surroundmgsaid-barrel; mea'ns carrie'dgby" surrounding :s

' said sleevefor.: logmening the'sand .prior to? E tsfadmission linto 'thezlbarrel ;j;'and means f'sleeve fabouflfsaid' barrel.

, pg'c'omprising a barrel;;-.aj the lower end thereof for.

ch'ecl: valve l admitting San ereinto'; a. rotatable sleeve ald'barrel; an auger carried by the flower, end of shid sleeve; Qandmea'ns for rotating said, sleeve'labout' barrelI-if g ,5. Acs'and pump comprisingabarrel-hairs ting an admission check valve in. its bottom;- a sleeve surrounding said barrel; an auger carried by the lowerend of said sleeve; and

means-. dependent upon a relative lineal- 8. A sand pump comprisin a barrel; a

movement of the barrel and sleeve for rotating said sleeve about said barrel.

' .6, A sand pump comprising a barrel hava sleeve surrounding said barrel; an a ger earned .by thelower end of saldsleeve, and

'meanspositioned between said barrel and said sleeve for causing said sleeveto rotate when said barrel is moved lineally therewithin.

7. A sand pump comprising a barrel having an admission check valve in. its boting an admission check valve in its bott m;

tom; a sleeve surrounding said barrel; 7:

means carried by the lower 'end of said sleeve for"loosenin'g the. sandpr-ior to its admission into the barrel; and means for rotating said sleevewhen-said barrel. is

movedlineally therewithin, comprising a spiral threa i'carried by the outer surface of the barrel and co;acting lugs carried b the innerisur face, of the sleeve. a

abarrel; a cylindrical extension carried y the lower end of said barrel; an admission check valve in the bottompf said extension; a sleeve surrounding said extens on; an auger car-.

ried by the lower 'end'of said sleeve; and

comprising as iral threadcarried' by the -I'neans for rotating said'slee've when said 'extensionis Imoved; 'lineally therewithin,

-outer surfaceo theextension" and coacting lugs carried by the inner surface of the. sleeve. p

9. A sand pump comprising a barrel having an admission check valve in. its bottom;

a sleeve surrounding said barrel and formedv with drainage apertures in the wall thereof; v

admission into the barrel; an 'd means positioned between said barrel and said sleeve for 'rptating the i" *-Whn the barrel is moved lineally therewithinjg v 10. A sand pump-*coinprlsing-a barrel having an admissioncheck valve its bot means carried by the lower end of said sleeve for-loosening the sand' prior, to-its moved lineally therewithin;.--and, an annular 1 shouldercarried by the lower 7 end portion" v offsaid barrel and forminga close fit'within 1 said sleeve,fsaid.shoulder being positioned to; drop below the lowermost ofsaid drain age apertures atthe lower limit;of*the lineal., 4

movement of the barrel,"a d -rise. above the uppermost of said apertures at the up j perslimit-of said movement;

11': Sand P p prisinga barrel",

having an admission check valve in its bottom; a sleeve surrounding said barrel and formed with spirally disposed drainage apertures in the'wall thereof; means earried by the lower end of said sleeve for loosening the sand prior to its admission into the barrel; inter-engaging spiral threads carried by said barrel and said sleeve for r0- tating said Sleeve when said barrel is moved lineally therewithin, said threads being positioned belowsaidj spirally disposed apertures in' said sleeve; and an annular shoulder carried by the lower end portion of said barrel and forming a close fit within said sleeve, said shoulder being positioned to drop below the lowermost of said drainage apertures at the lower limit of the lineal movement of the barrel, and to rise above the uppermost of said apertures at the upper limit of said movement.

In testimony whereofI have signed my name to this specification in the presence of two subscribing Witnesses.

' LEROY L RICHARD.

Witnesses:

M. HARWOOD', ARTHUR T. WEBB. 

